The Smithsonian Institution was founded for the "increase and diffusion of knowledge" from a bequest to the United States by the British scientist James Smithson (1764–1829).
Milfonian comes paraphrasing the name of this noble institution. However, the Milfonian’s are not a beacon of knowledge among men, rather than a bunch of guys that worship MILF’s and are delighted having intercourses with them.

Bob: “I cannot get Bruce’s mom out of my head”
Joe: “Bob, you are such a Milfonian”